The GW7-40.5/72.5 series disconnect switch is used in high-voltage transmission equipment with a rated frequency of 50Hz. It is designed for switching high-voltage lines under no-load conditions and for electrically isolating high-voltage electrical equipment, such as high-voltage busbars and circuit breakers under maintenance, from live high-voltage lines.

This series of disconnect switches is a three-column horizontal rotary double-break type, consisting of a base, post insulators, main conductive moving contacts, and main conductive static contact parts. It can be equipped with grounding switches on one or both sides. Both the main and grounding blades can be operated in three-phase linkage or single-phase operation using either an electric or manual mechanism.

When the main blade operating mechanism is activated, the vertical transmission rod drives the operating insulator of the disconnect switch to rotate. Through a set of four-link structures installed in the base, it drives the three-phase operating insulators to rotate, thereby achieving the opening and closing actions of the main conductive parts.

Note: Normal applies to altitude of 2000m and below, high altitude areas can be corrected.